Colter attachment for gang-plows.



,and ei'iioien; eolier ateaohinent, designed for use on. gang piovfs and eilapied to be readily applied so theszune,and capable of cutting the soii :it spaced points in advance of :i plow, Wherebjg7 iess power and labor will be required to operate the plow.

Specification of Leiters Essent.

im@ Serial No.

from She front portion of s plow neem l or beam frame. The plow beam or beam freine, which may be of any desired een sruction, is shown in -ihe accompanying; drawing ss consisting of side bers 8 and, Si connected at their front portions by a irene X verse rod 10 and by o` transverse rook shaft il iocated et. a poini intermediaire of he ends of the side bars S and 9 and suitably journaled iiiereon- '.'lbe side bei 8 is nrovided with an 'intermediate engiilary Ldisposed portion l2 entendi'. g; inwsrdiy and rearwardly to she' rearpori'gion i3 ihe side bar S, whereby ine resi portions. of side bars are :wronged closer iogether than the from, portions of 4he seine. IThe rear portions of the side bars extend downwardly io orin standard le, io which is With these und other objects in view the Secured a plow proper i5, which may be of invention consists in the construction and engl preferred consili-notion.

' the vnovel combination of parte hereinafter fiiiiy.

minor details of construction, Withing saune.

The 'front transverse rod, which is snitdesoribed, illustrated in the accompanying ably secured at iis terininsis io the :front drawing, and pointed out in the claims hereends of the side bars @end 9, constitutes e to appended, it being understood that vs pivot jfor the inclined iiniis 5 and G and pees rions changes in the orin, proportion, size through the 'front ends i and l? 'of-the The links, Whieh are of lunequal the scope of the oiaiins, may be resorted to length to arrange the ooit-ers 3 and i in dif without deparing from the spirit or sieri;` ferent iransverse planes, have their rear ioing any of ehe advantages of the invension.

:insbe drawing: Figure is a side elevation of a piow equipped wib, s eolter et taehnieni; eonstiucted in aeoordanoe with` ihis invention. Fig. `SZ is a plan View of the freni: portion of the pioW. Fig. Sis a. do isili transverse sectional view taken subsientiiilly on the line` 3-3 of iig. l; Fig, e isa detail perspeciive view of the rooie shaft.

Like numerais drswine.

in the accompanying drawing, inwhich 'is illustrated the preferred embodiment 'of the invention, the oolter attachment, which is designed to be applied yto each of the piow units of a gang plow, comprises in its construction a pair of rolling colters l and 2, spaced apart laterally, preferably four or ve inches, and ar 1anged in different transverse planes, as shown. The rolling oolters i `and 2, which consist of disks, are mounted on t'ansverse shafts or axles 3 and fi and Connected by the same with the lower, ends ofilongitndinally disposed links 5 and ,'ii, extending downwardly and rearwiirdiyf' of reference design-aie sor responding pares in ail the figures 'of the' ends 18 and 19 forked. or hii'urosed and provided ivih iriinsverseljiv :dined openings to receive the irsnsverself; disposed sneis or axles 3 and which also pass through inlined openings in the forked or bifureatod ioiver ends 2G and :2 of rods und 23. The rods 22 and eii'iend upwardly from the shafts or avies of the colters, and ere siidably connected with spaced arms T24 and 25, which exeud ioiivsrdly from the roei-z shaft l1. The arms 24 and are provideil in their front ends 'with openings 2G and 2i' to receive the rods und and the letter have threaded upper terminals 2S and 29 for the reception oif'nuis 30 and 3i, Washers being preferably interposed "beiween he nuis :1nd he arms. The' rock shaft also provided with :i rear ardiy exending :iini 32 which is connected by f1. link 33 "with an adjusting lever 34, adapted to be operated to reise and lower the oolers l and 2 io sin range the seine .for cotiing the desired depth -and also to eieviite them ebovethe surface of the ground when desire lThe oolters :ire jvieldably niaintained in engzm'ement with ehe soil by coiled springs 35 and 3G, disposed on bhe rods 22 end 23 and interposed beiiveen sdjus'tabie ioiver eef@ coiled springs and exert a downward pressure thereon in forcing the colters into the ground, and the said springs are adapted to yield to prevent breakage of the colters, should the same come in contact with a stone or other hard substance. The independent f pivotal mounting of the colters and the slidable connection between the rods thereof and thel forwardly extending arms of the rock shaft permit either of the colters to more upwardly against the action of its spring,-independently of the other colter, and the spring will return thellcolter to its normal position with relation to the plow beam after it has passed over an obstruction. i The link 33 is pivoted at its lower end 39 to the rearwardly extending arm 32 of the rock shaft, and it is connected at its upper portion by a suitable pivot to the adjusting lever. The ladjusting lever, which is disposed longitudinally of the plow unit, is pivoted at its rear end il toA a bracket 42, consisting of a substantially sector-shaped body portion disposed longitudinally of the plow unit and having a notched segment 43 at'its front portion. The notched segment isengaged by a pawl or detent 44, carried by 'theadjusting lever and operated by a latch lever 45. The bracket is provided with a transversely disposed base 4:6, extending across the space between the side bars 8 and 9 and suitably secured to the frame. As the messes specific .construction of the bracket for mounting the notched segment on. the supl porting frame does not constitute a portion of the present invention, the said segment may be mounted in any desired manner.

What is claimed iszj 1. A colter attachment of the class de scribed including independently movable links pivoted at their front ends and having forked rear portions, colters mounted in the forked portions of the links, rods having forked portions straddling the colters and connected with the links, a rock shaft provided with arms connected with the upper ends of the rods, and means fory partially rotating the rock shaft.

2. The combination with a beam having spaced side bars, a front pivot connecting the side bars, a transverse rock shaft also connecting the said side bars .and arranged in rear of the pivot,l said rock shaft being provided with spaced forwardly extending arms and having a rearwardly projecting arm, inclined links hung from the pivot and extending downwardly and rearwardly therefrom, colters carried by the rear ends of the links, rods connected withl the links and with the front arms of the rockshaft, a bracket mounted on the beam in rear of the rock shaft and having a notched segment, and an adjusting lever ulcruined on the bracket and connected with the rear arm of the .rock shaft. In testimony that l claim the foregoing as my own, I have hereto aliixed my signature in the presence of two witnesses.

JOHN HETBRINK.' Witnesses FRANK OLBERDING,

B. H. NAGEL. 

